Nested switchMap Issue?

gistfile1.js

var Observable = Rx.Observable;

// Nested SwitchLatest/SwitchMap BROKEN?

// Expecting: "A", "B" (with synchronous scheduler/execution)
// Observed:  "B"

Observable.of(

    Observable.of('A').switchMap(function(o) {
        return Observable.of(o);
    }),

    Observable.of('B')
).
switchLatest().
forEach(function(o){
    console.log(o);
});

// Expecting: "A", "B" (with synchronous scheduler/execution)
// Observed:  "B"

Observable.of(

    Observable.of('A').switchMap(function(o) {
        return Observable.of(o);
    }),

    Observable.of('B').switchMap(function(o) {
        return Observable.of(o);
    })
).
switchLatest().
forEach(function(o){
    console.log(o);
});

// Expecting: "A", "B", "C" (with synchronous scheduler/execution)
// Observed:  "C"

Observable.of(

    Observable.of('A').switchMap(function(o) {
        return Observable.of(o);
    }),

    Observable.of('B').switchMap(function(o) {
        return Observable.of(o);
    }),

    Observable.of('C').switchMap(function(o) {
        return Observable.of(o);
    })
).
switchLatest().
forEach(function(o){
    console.log(o);
});

// 'WORKING' VARIANTS

// Expecting: "B", "A"
// Observed: "B", "A"

Observable.of(
    Observable.of('B'),

    Observable.of('A').switchMap(function(o) {
        return Observable.of(o);
    })
).
switchLatest().
forEach(function(o){
    console.log(o);
});

// Expecting: "A"
// Observed: "A"

Observable.of(
    Observable.of('A').switchMap(function(o) {
        return Observable.of(o);
    })
).
switchLatest().
forEach(function(o){
    console.log(o);
});

// Expecting: "A"
// Observed: "A"

Observable.of('A').switchMap(function(o) {
  return Observable.of(o);
}).
forEach(function(o){
  console.log(o);
});

// Expecting: Two Observables On Nexted
// Observed:  Two Observables On Nexted

Observable.of(

    Observable.of('A').switchMap(function(o) {
        return Observable.of(o);
    }),

    Observable.of('B').switchMap(function(o) {
        return Observable.of(o);
    })
).
// switchLatest(). removed
forEach(function(o){
    console.log(o);
});